Sealed and grounded electrical connector and sealed and grounded electrical connector assembly

• US 7,632,148 B1
• Filed: 02/18/2009
• Issued: 12/15/2009
• Est. Priority Date: 02/18/2009
• Status: Active Grant

• Current Assignee: JST Corporation (JST Manufacturing Company Limited)
• Original Assignee: JST Corporation (JST Manufacturing Company Limited)
• Inventors: Chen, Ping, Kawamura, Makiko
• Primary Examiner(s): NGUYEN, KHIEM M
• Application Number:
  US12/372,937
• Time in Patent Office: 300 Days
• Field of Search: 439/98, 439/108, 43960741-60752
• US Class Current: 439/607.41
• CPC Class Codes: H01R 13/506 assembled by snap action of the parts
• CPC Class Codes: H01R 13/5221 having cable sealing means
• CPC Class Codes: H01R 13/6215 using one or more bolts
• CPC Class Codes: H01R 13/648 Protective earth or shield arrangements on coupling devices , e.g. anti-static shielding coaxially arranged shields H01R24/38
• CPC Class Codes: H01R 13/655 with earth brace
• CPC Class Codes: H01R 2103/00 Two poles
• CPC Class Codes: H01R 24/22 with additional earth or shield contacts

Abstract

An electrical connector includes a shield cover forming a shield cover cavity that receives a grounding assembly and a terminal mounting block. A conduit is integrally connected to the shield cover and receives at least one cable assembly therethrough for connection to the terminal mounting block. The grounding assembly disposed between the conduit and terminal mounting block clamps an exposed wire shielding portion of the at least one cable assembly for electrically grounding the same upon fastening the electrical connector to an electrically-conductive support surface. An O-ring-like cable seal seals the at least one cable assembly in the conduit. An O-ring-like shield cover seal extends externally of and circumferentially about the shield cover to seal the electrical connector when the electrical connector is received in a barrier wall recess formed by a barrier wall structure. The electrical connector and the barrier wall structure form an electrical connector assembly.

Claims

1. An electrical connector, comprising:

a shield cover having a base panel and four side walls serially connected to each other and connected to and depending from the base panel to define a shield cover cavity into the shield cover, the base panel having a base panel hole formed therethrough, the connected four side walls defining a peripheral side wall edge portion forming an opening into the shield cover cavity;

at least one cable assembly including a cable, a back cover, a cable seal and a cable assembly terminal, the cable having a conducting wire with an exposed conducting wire portion, an insulating sheath surrounding the conducting wire and having an exposed insulating sheath portion, a wire shielding surrounding the insulating sheath and having an exposed wire shielding arrangement including an exposed wire shielding portion and an outer insulating jacket surrounding the wire shielding, the back cover being in contact with and surrounding the insulating sheath, the cable assembly terminal connected to the exposed conducting wire portion;

a conduit connected to a selected one of the four side walls and forming a conduit passageway therethrough, the conduit passageway being in communication with the shield cover cavity, the conduit sized to receive a portion of the at least one cable assembly therein and therethrough and adapted for the back cover to be releasably connected thereto with the cable seal surrounding the outer insulating jacket and in sealing contact with the conduit and the outer insulating jacket;

a grounding assembly sized to be received and releasably retained in the shield cover cavity between the terminal mounting block and the conduit passageway;

a shield cover seal in contact with and extending about the connected four side walls adjacent the opening;

a fastener structure having a fastener head and an elongated shaft, the elongated shaft sized to be slidably received in the base panel hole; and

a terminal mounting block disposed in the shield cover cavity and connected to the shield cover, the terminal mounting block adapted to receive and retain at least the cable assembly terminal and the exposed conducting wire portion therein and to permit the elongated shaft to pass therethrough.

2. An electrical connector according to claim 1, wherein, upon releasably connecting the back cover to the conduit, the cable seal is received and retained in the conduit passageway in a sealing relationship with the conduit and the outer insulating jacket.

3. An electrical connector according to claim 1, wherein the grounding assembly including a yoke member being resiliently-biased and projecting outwardly from the opening when the grounding assembly is received and releasably retained in the shield cover cavity, the yoke member being fabricated from an electrically-conductive sheet material.

4. An electrical connector according to claim 3, wherein the grounding assembly includes a grounding bar member fabricated from an electrically-conductive material and a pair of grounding assembly fasteners, the grounding bar member having a pair of grounding bar member holes extending therethrough, the yoke member having a pair of leg portions and a contact portion interconnecting the pair of leg portions, each leg portion having a leg portion hole formed therethrough.

5. An electrical connector according to claim 4, wherein the contact portion includes a pair of outwardly-projecting U-shaped sections interconnected by an inwardly-projecting U-shaped section, respective ones of the pair of leg portions connected to respective ones of the outwardly-projecting U-shaped sections.

6. An electrical connector according to claim 5, further comprising a grounding assembly mounting block disposed in the shield cover cavity and integrally connected to the base panel, the grounding assembly mounting block having a pair of threaded grounding assembly mounting block holes disposed apart from one another, the grounding assembly mounting block and the grounding bar member associated with one another in a manner that respective ones of the pair of grounding bar member holes, the pair of threaded grounding assembly mounting block holes and the leg portion holes register with one another to receive respective ones of the grounding assembly fasteners for releasably connecting the grounding assembly and the shield cover to each other and to clamp the exposed wire shielding arrangement between the yoke member and the grounding assembly mounting block.

7. An electrical connector according to claim 6, wherein, when the grounding assembly and the shield cover are releasably connected to each other, at least portions of the outwardly-projecting U-shaped sections project outwardly from the opening while the inwardly-projecting U-shaped section and the pair of leg portions are disposed interiorly of the shield cover cavity, the grounding assembly mounting block is disposed adjacent the selected one of the four side walls.

8. An electrical connector according to claim 4, wherein the grounding bar member has a flat surface and an opposite scalloped surface, the pair of grounding bar member holes extending through and between the flat surface and the scalloped surface.

9. An electrical connector according to claim 4, wherein the yoke member has a yoke member base having two flat end pieces, a center piece and two arcuate pieces with each arcuate piece integrally formed with a respective flat end piece and the center piece and a pair of yoke member arm portions, each yoke member arm portion having a straight piece and a curved piece, each respective straight piece integrally interconnecting a respective one of the curved pieces and the flat end pieces, the center piece having a center piece hole formed therethrough.

10. An electrical connector according to claim 9, wherein the two flat end pieces and the center piece are disposed in a common plane and the two straight pieces extending perpendicularly to the common plane.

11. An electrical connector according to claim 10, wherein respective ones of the two curved pieces extend from respective ones of the straight pieces towards each other and away from the common plane and reverse away from one other prior to contacting one another to terminate and form hook-shaped contact portions.

12. An electrical connector according to claim 11, wherein the grounding assembly includes a grounding bar member and a grounding assembly fastener, the grounding bar member has a flat surface, an opposite scalloped surface and a pair of opposite flat side surfaces interconnecting the flat surface and the scalloped surface, the grounding bar member having a centrally-disposed grounding bar member hole extending through and between the flat surface and the scalloped surface, respective ones of the flat side surfaces and respective ones of the straight pieces facially contacting each other and the scalloped surface and the yoke member base facially contacting one another with the grounding bar member hole and the center piece hole being in registration with one another so that the grounding assembly fastener can be received therein and releasably connect the grounding assembly and the shield cover to each other.

13. An electrical connector according to claim 12, further comprising a grounding assembly mounting block disposed in the shield cover cavity and integrally connected to the base panel, the grounding assembly mounting block having a threaded grounding assembly mounting block hole formed therein, the grounding assembly mounting block and the grounding bar member associated with one another in a manner that the grounding bar member hole and the grounding assembly mounting block hole with one another to receive the grounding assembly fastener for releasably connecting the grounding assembly and the shield cover to each other and to clamp the exposed wire shielding arrangement between the yoke member and the grounding assembly mounting block.

14. An electrical connector according to claim 1, wherein the peripheral side wall edge portion includes an inner peripheral side wall extending circumferentially about the shield cover and an outer peripheral side wall extending at least partially circumferentially about the shield cover, the outer peripheral side wall connected to and disposed apart and outwardly from the inner peripheral side wall and extending toward the opening to define a channel therebetween, the outer peripheral side wall extending along and about the fours side walls adjacent the opening.

15. An electrical connector according to claim 14, wherein the inner peripheral side wall has a circumferential groove formed therein, the circumferential groove facing away from the shield cover cavity.

16. An electrical connector according to claim 15, wherein the shield cover seal is sized and adapted to be received at least partially within the circumferential groove.

17. An electrical connector according to claim 15, wherein the circumferential groove is disposed between the channel and the opening.

18. An electrical connector according to claim 15, wherein the inner peripheral side wall has a circumferential notch extending into the inner peripheral side wall adjacent the opening and extending circumferentially about the inner peripheral side wall, the circumferential notch being defined by a first notch surface extending at an exterior of the inner peripheral side wall towards the shield cover cavity and a second notch surface extending from an inner peripheral side wall edge and perpendicularly to the first notch surface.

19. An electrical connector according to claim 18, wherein the shield cover seal is sized and adapted to be received at least partially within the circumferential notch.

20. An electrical connector according to claim 1, wherein the back cover includes back cover main panel having a cable-receiving hole formed therethrough and a pair of latch panels facially disposed apart from and extending parallel to one another and connected perpendicularly to the back cover main panel in a cantilevered manner, each latch panel having a latch panel hole formed therethrough and operative to move to and between a normal state and a flexed state, each latch panel being resiliently biased to the normal state.

21. An electrical connector according to claim 20, wherein the back cover includes a hollow collar defining a collar passageway, the collar connected to the back cover main panel and disposed between the pair of latch panels, the collar passageway and the cable-receiving hole being axially aligned and in communication with one another.

22. An electrical connector according to claim 21, wherein the conduit has a pair of opposing exterior flat surfaces and at least one opposing pair of latch projections with one latch projection projecting from one exterior flat surface and a remaining one of the pair of latch projections projecting from a remaining one of the exterior flat surfaces, respective ones of the latch panel holes sized to capture respective ones of the latch projections when the at least one cable assembly is connected to the conduit.

23. An electrical connector according to claim 1, wherein the cable assembly terminal is a female blade-receiving terminal having a connection piece and a U-shaped piece integrally connected to the connection piece, the connection piece connected to the exposed conducting wire portion.

24. An electrical connector according to claim 1, the at least one cable assembly includes an inner ferrule connected to, in contact with and surrounding the exposed wire shielding portion.

25. An electrical connector according to claim 1, wherein the exposed wire shielding arrangement includes a folded-back exposed wire shielding portion electrically and mechanically connected to the exposed wire shielding portion and wherein the at least one cable assembly includes an inner ferrule and an outer ferrule such that the inner ferrule is connected to, in contact with and surrounds the exposed wire shielding portion, the folded-back exposed wire shielding portion is folded back over the inner ferrule to be in surrounding contact with the inner ferrule and the outer ferrule is connected to, in contact with and surrounds the folded-back exposed wire shielding portion.

26. An electrical connector according to claim 1, wherein the terminal mounting block includes a terminal mounting block hole formed therethrough and sized to slidably receive the elongated shaft.

27. An electrical connector according to claim 26, wherein the terminal mounting block includes a first terminal mounting block part, a second terminal mounting block part and a terminal position assurance part, the first terminal mounting block part and the second terminal mounting block part nest with one another, the first terminal mounting block part releasably receives the terminal position assurance part and is releasably connected to the shield cover.

28. An electrical connector assembly adapted to be electrically connected a plurality of power supply terminals of a power supply and mechanically connected to a support surface having a fastener hole formed thereinto and a plurality of terminal holes formed thereinto with the power supply terminals projecting therethrough, the electrical connector assembly comprising:

an electrical connector including;

a shield cover having a base panel and four side walls serially connected to each other and connected to and depending from the base panel to define a shield cover cavity into the shield cover, the base panel having a base panel hole formed therethrough, the connected four side walls defining a peripheral side wall edge portion forming an opening into the shield cover cavity;

a shield cover seal extending circumferentially around and in contact with the peripheral side wall edge portion exteriorly of the shield cover cavity;

a plurality of cable assemblies, each cable assembly including a cable, a back cover, a cable seal and a cable assembly terminal, the cable having a conducting wire with an exposed conducting wire portion, an insulating sheath surrounding the conducting wire and having an exposed insulating sheath portion, a wire shielding surrounding the insulating sheath and having an exposed wire shielding arrangement including an exposed wire shielding portion and an outer insulating jacket surrounding the insulating sheath behind the exposed wire shielding portion, the back cover being in contact with and surrounding the insulating sheath, the cable assembly terminal connected to the exposed conducting wire portion;

a conduit connected to a selected one of the four side walls and forming a conduit passageway therethrough, the conduit passageway being in communication with the shield cover cavity, the conduit sized to receive a portion of the at least one cable assembly therein and therethrough and adapted for the back cover to be releasably connected thereto with the cable seal surrounding the outer insulating jacket and in sealing contact with the conduit and the outer insulating jacket;

a grounding assembly sized to be received and releasably retained in the shield cover cavity between the terminal mounting block and the conduit passageway;

a shield cover seal in contact with and extending about the connected four side walls adjacent the opening;

a fastener structure having a fastener head and an elongated shaft, the elongated shaft sized to be slidably received in the base panel hole; and

a terminal mounting block disposed in and connected to the shield cover, the terminal mounting block adapted to receive and retain at least the cable assembly terminal and the exposed conducting wire portion therein and to permit the elongated shaft to pass therethrough, and

a barrier wall structure having a barrier wall connected to and projecting from the support surface to define a barrier wall recess, the barrier wall extending circumferentially about the plurality of power supply terminals, the support surface fastener hole and the plurality of support surface terminal holes and configured to receive therein the peripheral side wall edge portion of the shield cover along with the shield cover seal,

wherein, when the peripheral side wall edge portion and the shield cover seal are received in the barrier wall recess, the plurality of power supply terminals and the cable assembly terminals are matably engaged with each other, the shield cover seal is in pressing contact with the barrier wall and the fastener structure is aligned for threadable engagement with the support surface fastener hole.

29. An electrical connector assembly according to claim 28, wherein the peripheral side wall edge portion includes an inner peripheral side wall extending circumferentially about the shield cover and an outer peripheral side wall connected to and disposed apart and outwardly from the inner peripheral side wall and extending toward the opening to define a channel therebetween, the outer peripheral side wall extending along and about the fours side walls adjacent the opening and disposed apart from the opening, the channel sized to slidably receive the barrier wall.

30. An electrical connector assembly according to claim 29, wherein the inner peripheral side wall has a circumferential groove formed therein, the circumferential groove facing away from the shield cover cavity, the shield cover seal sized and adapted to be received at least partially within the circumferential groove.

31. An electrical connector assembly according to claim 30, wherein the circumferential groove is disposed between the channel and the opening.

32. An electrical connector assembly according to claim 29, wherein the inner peripheral side wall has a circumferential notch extending into the inner peripheral side adjacent the opening and extending circumferentially about the inner peripheral side wall, the circumferential notch being defined by a first notch surface extending at an exterior of the inner peripheral side wall towards the shield cover opening and a second notch surface extending from an inner peripheral side wall edge and perpendicularly to the first notch surface, the shield cover seal sized and adapted to be received at least partially within the circumferential notch.

33. An electrical connector assembly according to claim 28, wherein, upon releasably connecting the back cover to the conduit, the cable seal is received and retained in the conduit passageway in a sealing relationship with the conduit and the outer insulating jacket.

34. An electrical connector assembly according to claim 29, wherein the barrier wall structure includes a barrier wall inner panel connected to the barrier wall and disposed in the barrier wall recess and a barrier wall outer panel connected to and surrounding the barrier wall.